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BS EN IEC 62271-200:2021

BS EN IEC 62271-200:2021

$215.11

High-voltage switchgear and controlgear – AC metal-enclosed switchgear and controlgear for rated voltages above 1 kV and up to and including 52 kV

Published By Publication Date Number of Pages
BSI 2021 110
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IEC 62271-200:2021(E) is applicable to prefabricated metalā€‘enclosed switchgear and controlgear assemblies designed for: ā€“ alternating current; ā€“ rated voltages above 1 kV and up to and including 52 kV; ā€“ service frequencies up to and including 60 Hz; ā€“ indoor and outdoor installation. The assembly can include air-insulated and/or fluid-filled compartments. This third edition cancels and replaces the second edition published in 2011. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) clause numbering aligned with IEC 62271ā€‘1:2017, including the adoption of the subclause names of Clause 3; b) in Clause 3 specific definitions are added for “in service”, “normal operating condition” and “normal use”; c) internal arc testing on pole-mounted switchgear is taken out of this document, as it is now covered by the specific standard IEC 62271ā€‘214:2019; d) a more precise description of earthing circuit is given with the inclusion of ratings and test requirements; e) number of mechanical tests on interlocks is reduced for type testing; a more precise description of forces to apply during type testing is given (refer to 7.102); f) resistance measuring on main circuit is only needed before continuous current tests (as reference for routine tests) and no longer needed after this continuous current test. Rationale for this deletion is that this measured resistance does not mean anything; as the temperature rise test was just finished, a new temperature rise test will not give new information; g) IEC 62271-100:2021, IEC 62271-103:2021, IEC 62271-105:2021 and IEC 62271-106:2021 are referred to in the document; h) IEC 62271ā€‘107:2019 and IEC IEEE 62271ā€‘37ā€‘013:2015 are also considered in 7.101.2; i) a more precise description of LSC category is given with the inclusion of an explanatory flowchart (Annex D); j) examples not covered by the IAC test are transferred from Clause 6 to 9.103; k) the term “assembly” is defined in Clause 3 and used as synonym for “metal-enclosed switchgear and controlgear” in this document; l) “metallic” is replaced by “metal” where applicable; m) 6.105 is now covered by 7.7; n) a 1 s rule was introduced for Criterion 4 during IAC tests regarding hot gases versus glowing particles as cause of ignition; o) a more precise description of internal arc tests for switchgear with protrusions is given in Annex A.

PDF Catalog

PDF Pages PDF Title
2 undefined
5 Annex ZA (normative)Normative references to international publicationswith their corresponding European publications
7 English
CONTENTS
11 FOREWORD
14 INTRODUCTION
15 1 Scope
2 Normative references
16 3 Terms and definitions
3.1 General terms and definitions
18 3.2 Assemblies of switchgear and controlgear
3.3 Parts of assemblies
3.4 Switching devices
3.5 Parts of switchgear and controlgear
21 3.6 Operational characteristics of switchgear and controlgear
23 3.7 Characteristic quantities
24 3.8 Index of definitions
25 4 Normal and special service conditions
26 5 Ratings
5.1 General
5.2 Rated voltage (Ur)
5.3 Rated insulation level (Ud, Up, Us)
5.4 Rated frequency (fr)
5.5 Rated continuous current (Ir)
5.6 Rated shorttime withstand currents (Ik, Ike)
27 5.7 Rated peak withstand currents (Ip, Ipe)
5.8 Rated durations of short-circuit (tk, tke)
28 5.9 Rated supply voltage of auxiliary and control circuits (Ua)
5.10 Rated supply frequency of auxiliary and control circuits
5.11 Rated pressure of compressed gas supply for controlled pressure systems
5.101 Classification of earthing function through main switching device
5.102 Rated cable test voltages (Uct (AC), Uct (DC))
5.103 Ratings of the internal arc classification (IAC)
30 6 Design and construction
6.1 Requirements for liquids in switchgear and controlgear
6.2 Requirements for gases in switchgear and controlgear
6.3 Earthing of switchgear and controlgear
31 6.4 Auxiliary and control equipment and circuits
6.5 Dependent power operation
6.6 Stored energy operation
6.7 Independent unlatched operation (independent manual or power operation)
6.8 Manually operated actuators
6.9 Operation of releases
32 6.10 Pressure/level indication
6.11 Nameplates
Tables
Table 1 ā€“ Nameplate information
33 6.12 Locking devices
34 6.13 Position indication
6.14 Degrees of protection provided by enclosures
6.14.1 General
35 6.14.2 Protection of persons against access to hazardous parts and protection of the equipment against ingress of solid foreign objects (IP coding)
6.14.3 Protection against ingress of water (IP coding)
6.14.4 Protection of equipment against mechanical impact under normal operating conditions (IK coding)
6.15 Creepage distances for outdoor insulators
6.16 Gas and vacuum tightness
6.17 Tightness for liquid systems
6.18 Fire hazard (flammability)
6.19 Electromagnetic compatibility (EMC)
6.20 X-ray emission
6.21 Corrosion
6.22 Filling levels for insulation, switching and/or operation
36 6.101 General requirements for assemblies
6.102 Metal enclosure
38 6.103 High-voltage compartments
42 6.104 Removable parts
6.105 Provisions for dielectric tests on cables
43 6.106 Internal arc fault
7 Type tests
7.1 General
7.1.1 Basics
44 7.1.2 Information for identification of test objects
7.1.3 Information to be included in type-test reports
7.2 Dielectric tests
7.2.1 General
7.2.2 Ambient air conditions during tests
7.2.3 Wet test procedure
7.2.4 Arrangement of the equipment
7.2.5 Criteria to pass the test
45 7.2.6 Application of the test voltage and test conditions
46 7.2.7 Tests of switchgear and controlgear of Ur ā‰¤ 245 kV
47 7.2.8 Tests of switchgear and controlgear of Ur > 245 kV
7.2.9 Artificial pollution tests for outdoor insulators
7.2.10 Partial discharge tests
7.2.11 Dielectric tests on auxiliary and control circuits
7.2.12 Voltage test as condition check
7.2.101 Dielectric tests on cable testing circuits
48 7.3 Radio interference voltage (RIV) test
7.4 Resistance measurement
7.4.1 Measurement of the resistance of auxiliary contacts class 1 and class 2
7.4.2 Measurement of the resistance of auxiliary contacts class 3
7.4.3 Electrical continuity of earthed metallic parts test
7.4.4 Resistance measurement of contacts and connections in the main circuit as a condition check
7.5 Continuous current tests
7.5.1 Condition of the test object
7.5.2 Arrangement of the equipment
7.5.3 Test current and duration
49 7.5.4 Temperature measurement during test
7.5.5 Resistance of the main circuit
7.5.6 Criteria to pass test
7.5.101 Test report
50 7.6 Short-time withstand current and peak withstand current tests
7.6.1 General
51 7.6.2 Arrangement of the equipment and of the test circuit
7.6.3 Test current and duration
52 7.6.4 Conditions of the test object after test
7.7 Verification of the protection
7.7.1 Verification of the IP coding
7.7.2 Verification of the IK coding
7.8 Tightness tests
53 7.9 Electromagnetic compatibility tests (EMC)
7.10 Additional tests on auxiliary and control circuits
7.10.1 General
7.10.2 Functional tests
7.10.3 Verification of the operational characteristics of auxiliary contacts
7.10.4 Environmental tests
7.10.5 Dielectric test
7.11 X-radiation test for vacuum interrupters
7.101 Verification of making and breaking capacities
7.101.1 General
54 7.101.2 Test requirements for main switching devices
7.101.3 Test requirements for earthing function
55 7.102 Mechanical operation tests
7.102.1 Switching devices and removable parts
7.102.2 Mechanical and electromechanical interlocks and locking devices
56 7.103 Pressure withstand test for gas-filled compartments
7.103.1 Pressure withstand test for gas-filled compartments with pressure relief devices
57 7.103.2 Pressure withstand test for gas-filled compartments without pressure-relief devices
7.104 Tests to verify the protection of persons against dangerous electrical effects
7.104.1 General
7.104.2 Dielectric tests
58 7.104.3 Measurements of leakage currents
7.105 Internal arc test
7.105.1 General
7.105.2 Test conditions
59 7.105.3 Arrangement of the equipment
60 7.105.4 Test procedure
7.105.5 Criteria to pass the test
61 7.105.6 Test report
7.105.7 Extension of validity of test results
62 8 Routine tests
8.1 General
8.2 Dielectric test on the main circuit
8.3 Tests on auxiliary and control circuits
8.3.1 Inspection of auxiliary and control circuits, and verification of conformity to the circuit diagrams and wiring diagrams
8.3.2 Functional tests
63 8.3.3 Verification of protection against electrical shock
8.3.4 Dielectric tests
8.4 Measurement of the resistance of the main circuit
8.5 Tightness test
8.6 Design and visual checks
8.101 Partial discharge measurement
8.102 Mechanical operation tests
64 8.103 Pressure tests of gasfilled compartments
8.104 Tests after erection on site
8.105 Measurement of fluid condition after filling on site
9 Guide to the selection of switchgear and controlgear (informative)
9.1 General
65 9.2 Selection of rated values
9.3 Cable-interface considerations
9.4 Continuous or temporary overload due to changed service conditions
9.5 Environmental aspects
68 Figures
Figure 1 ā€“ LSC1
Figure 2 ā€“ LSC2
Figure 3 ā€“ LSC2
69 Figure 4 ā€“ LSC2
Figure 5 ā€“ LSC2A
Figure 6 ā€“ LSC2B
Figure 7 ā€“ LSC2B
Figure 8 ā€“ LSC1
Figure 9 ā€“ No LSC assigned
72 Table 2 ā€“ Locations, causes and examples of measuresto decrease the probability of internal arc faults
74 Table 3 ā€“ Singlephase-to-earth arc fault currentdepending on the network neutral earthing
76 Table 4 ā€“ Summary of technical requirements, ratingsand optional tests for assemblies
78 10 Information to be given with enquiries, tenders and orders (informative)
10.1 General
10.2 Information with enquiries and orders
79 10.3 Information with tenders
80 11 Transport, storage, installation, operating instructions and maintenance
11.1 General
11.2 Conditions during transport, storage and installation
11.3 Installation
11.4 Operating instructions
81 11.5 Maintenance
12 Safety
12.101 Procedures
12.102 Internal arc aspects
82 13 Influence of the product on the environment
83 Annex A (normative)Internal arc fault ā€“Method to verify the internal arc classification (IAC)
A.1 Room simulation
A.1.1 Room simulation for indoor assemblies
85 A.1.2 Room simulation for outdoor assemblies
A.2 Indicators (for assessing the thermal effects of the gases)
A.2.1 General
A.2.2 Arrangement of indicators
87 A.3 Tolerances for geometrical dimensions of test arrangements
A.4 Test parameters
A.4.1 General
A.4.2 Voltage
A.4.3 Current
88 A.4.4 Frequency
A.5 Test procedure
A.5.1 Supply circuit
89 A.5.2 Arc initiation
90 Table A.1 ā€“ Parameters for internal arc test according to compartment construction
91 Figure A.1 ā€“ Mounting frame for vertical indicators
Figure A.2 ā€“ Horizontal indicator
92 Figure A.3 ā€“ Position of the indicators
93 Figure A.4 ā€“ Room simulation and indicator positioning for accessibility type A,classified rear side, ceiling above 2 000 mm, functional unit of any height
94 Figure A.5 ā€“ Room simulation and indicator positioning for accessibility type A, nonaccessible rear side, ceiling at 2 000 mm, so functional unit ā‰¤ 1 800 mm high
95 Figure A.6 ā€“ Room simulation and indicator positioning for accessibility type B,classified rear side, functional unit ā‰„ 1 900 mm high
96 Figure A.7 ā€“ Room simulation and indicator positioning for accessibility type B,classified rear side, functional unit < 1 900 mm high
97 Figure A.8 ā€“ Ceiling height stated from the floor or false floor levelwhere the assembly is actually placed
98 Figure A.9 ā€“ Indicator positioning in case of protrusionat < 2 000 mm height, at classified side
99 Figure A.10 ā€“ Indicator positioning in case a bottom exhaust duct belongingto the assembly is defined as a walkable integrated part of the false floor
100 Annex B (normative)Partial discharge measurement
B.1 General
B.2 Application
B.3 Test circuits and measuring instruments
101 B.4 Test procedure
102 B.5 Maximum permissible partial discharge quantity
103 Table B.1 ā€“ Test circuits and procedures
104 Figure B.1 ā€“ Partial discharge test circuit (three-phase arrangement)
105 Figure B.2 ā€“ Partial-discharge test circuit (system without earthed neutral)
106 Annex C (informative)List of notes concerning certain countries
107 Annex D (normative)Flowchart categorization procedure for LSC for a givenfunctional unit FU1 with connection compartment
Figure D.1 ā€“ Flowchart categorization procedure for LSCfor a given functional unit FU1 with connection compartment
108 Bibliography

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